diff --git a/api/database/aircraft.py b/api/database/aircraft.py
index 77dc2ea..82f91c5 100644
--- a/api/database/aircraft.py
+++ b/api/database/aircraft.py
@@ -1,5 +1,8 @@
+from typing import Any
+
 from bson import ObjectId
 from fastapi import HTTPException
+from pymongo.errors import WriteError
 
 from database.db import aircraft_collection
 from schemas.aircraft import AircraftDisplaySchema, AircraftCreateSchema, aircraft_display_helper, aircraft_add_helper
@@ -71,7 +74,7 @@ async def update_aircraft(body: AircraftCreateSchema, id: str) -> AircraftDispla
 
     :param body: Updated aircraft data
     :param id: ID of aircraft to update
-    :return: ID of updated aircraft
+    :return: Updated aircraft
     """
     aircraft = await aircraft_collection.find_one({"_id": ObjectId(id)})
 
@@ -82,7 +85,32 @@ async def update_aircraft(body: AircraftCreateSchema, id: str) -> AircraftDispla
     if updated_aircraft is None:
         raise HTTPException(500, "Failed to update flight")
 
-    return id
+    return AircraftDisplaySchema(**body.model_dump())
+
+
+async def update_aircraft_field(field: str, value: Any, id: str) -> AircraftDisplaySchema:
+    """
+    Update a single field of the given aircraft in the database
+
+    :param field: Field to update
+    :param value: Value to set field to
+    :param id: ID of aircraft to update
+    :return: Updated aircraft
+    """
+    aircraft = await aircraft_collection.find_one({"_id": ObjectId(id)})
+
+    if aircraft is None:
+        raise HTTPException(404, "Aircraft not found")
+
+    try:
+        updated_aircraft = await aircraft_collection.update_one({"_id": ObjectId(id)}, {"$set": {field: value}})
+    except WriteError as e:
+        raise HTTPException(400, e.details)
+
+    if updated_aircraft is None:
+        raise HTTPException(500, "Failed to update flight")
+
+    return AircraftDisplaySchema(**aircraft.model_dump())
 
 
 async def delete_aircraft(id: str) -> AircraftDisplaySchema:
diff --git a/api/database/flights.py b/api/database/flights.py
index ae59ae5..7a104f5 100644
--- a/api/database/flights.py
+++ b/api/database/flights.py
@@ -1,10 +1,13 @@
 import logging
 from datetime import datetime
+from typing import Dict, Union
 
 from bson import ObjectId
 from bson.errors import InvalidId
 from fastapi import HTTPException
 
+from schemas.aircraft import AircraftCreateSchema, aircraft_add_helper
+from .aircraft import retrieve_aircraft_by_tail, update_aircraft, update_aircraft_field
 from .db import flight_collection
 from schemas.flight import FlightConciseSchema, FlightDisplaySchema, FlightCreateSchema, flight_display_helper, \
     flight_add_helper
@@ -12,22 +15,30 @@ from schemas.flight import FlightConciseSchema, FlightDisplaySchema, FlightCreat
 logger = logging.getLogger("api")
 
 
-async def retrieve_flights(user: str = "", sort: str = "date", order: int = -1) -> list[FlightConciseSchema]:
+async def retrieve_flights(user: str = "", sort: str = "date", order: int = -1, filter: str = "",
+                           filter_val: str = "") -> list[FlightConciseSchema]:
     """
     Retrieve a list of flights, optionally filtered by user
 
     :param user: User to filter flights by
     :param sort: Parameter to sort results by
     :param order: Sort order
+    :param filter: Field to filter flights by
+    :param filter_val: Value to filter field by
     :return: List of flights
     """
+    filter_options = {}
+    if user != "":
+        filter_options["user"] = ObjectId(user)
+    if filter != "":
+        filter_options[filter] = filter_val
+
+    print(filter_options)
+
     flights = []
-    if user == "":
-        async for flight in flight_collection.find().sort({sort: order}):
-            flights.append(FlightConciseSchema(**flight_display_helper(flight)))
-    else:
-        async for flight in flight_collection.find({"user": ObjectId(user)}).sort({sort: order}):
-            flights.append(FlightConciseSchema(**flight_display_helper(flight)))
+    async for flight in flight_collection.find(filter_options).sort({sort: order}):
+        flights.append(FlightConciseSchema(**flight_display_helper(flight)))
+
     return flights
 
 
@@ -37,7 +48,7 @@ async def retrieve_totals(user: str, start_date: datetime = None, end_date: date
     :param user:
     :return:
     """
-    match = {"user": ObjectId(user)}
+    match: Dict[str, Union[Dict, ObjectId]] = {"user": ObjectId(user)}
 
     if start_date is not None:
         match.setdefault("date", {}).setdefault("$gte", start_date)
@@ -122,19 +133,22 @@ async def insert_flight(body: FlightCreateSchema, id: str) -> ObjectId:
     :param id: ID of creating user
     :return: ID of inserted flight
     """
-    try:
-        aircraft = await flight_collection.find_one({"_id": ObjectId(body.aircraft)})
-    except InvalidId:
-        raise HTTPException(400, "Invalid aircraft ID")
+    aircraft = await retrieve_aircraft_by_tail(body.aircraft)
 
     if aircraft is None:
         raise HTTPException(404, "Aircraft not found")
 
+    # Update hobbs of aircraft to reflect new hobbs end
+    if body.hobbs_end > 0 and body.hobbs_end != aircraft.hobbs:
+        await update_aircraft_field("hobbs", body.hobbs_end, aircraft.id)
+
+    # Insert flight into database
     flight = await flight_collection.insert_one(flight_add_helper(body.model_dump(), id))
+
     return flight.inserted_id
 
 
-async def update_flight(body: FlightCreateSchema, id: str) -> FlightDisplaySchema:
+async def update_flight(body: FlightCreateSchema, id: str) -> str:
     """
     Update given flight in the database
 
@@ -147,12 +161,18 @@ async def update_flight(body: FlightCreateSchema, id: str) -> FlightDisplaySchem
     if flight is None:
         raise HTTPException(404, "Flight not found")
 
-    aircraft = await flight_collection.find_ond({"_id": ObjectId(body.aircraft)})
+    aircraft = await retrieve_aircraft_by_tail(body.aircraft)
 
     if aircraft is None:
         raise HTTPException(404, "Aircraft not found")
 
+    # Update hobbs of aircraft to reflect new hobbs end
+    if body.hobbs_end > 0 and body.hobbs_end != aircraft.hobbs:
+        await update_aircraft_field("hobbs", body.hobbs_end, aircraft.id)
+
+    # Update flight in database
     updated_flight = await flight_collection.update_one({"_id": ObjectId(id)}, {"$set": body.model_dump()})
+
     if updated_flight is None:
         raise HTTPException(500, "Failed to update flight")
 
diff --git a/api/routes/flights.py b/api/routes/flights.py
index ee968d5..fc6a0cf 100644
--- a/api/routes/flights.py
+++ b/api/routes/flights.py
@@ -15,7 +15,8 @@ logger = logging.getLogger("flights")
 
 
 @router.get('/', summary="Get flights logged by the currently logged-in user", status_code=200)
-async def get_flights(user: UserDisplaySchema = Depends(get_current_user), sort: str = "date", order: int = -1) -> list[
+async def get_flights(user: UserDisplaySchema = Depends(get_current_user), sort: str = "date", order: int = -1,
+                      filter: str = "", filter_val: str = "") -> list[
     FlightConciseSchema]:
     """
     Get a list of the flights logged by the currently logged-in user
@@ -23,25 +24,29 @@ async def get_flights(user: UserDisplaySchema = Depends(get_current_user), sort:
     :param user: Current user
     :param sort: Attribute to sort results by
     :param order: Order of sorting (asc/desc)
+    :param filter: Field to filter results by
+    :param filter_val: Value to filter field by
     :return: List of flights
     """
-    flights = await db.retrieve_flights(user.id, sort, order)
+    flights = await db.retrieve_flights(user.id, sort, order, filter, filter_val)
     return flights
 
 
 @router.get('/by-date', summary="Get flights logged by the current user, categorized by date", status_code=200,
             response_model=dict)
 async def get_flights_by_date(user: UserDisplaySchema = Depends(get_current_user), sort: str = "date",
-                              order: int = -1) -> dict:
+                              order: int = -1, filter: str = "", filter_val: str = "") -> dict:
     """
     Get a list of the flights logged by the currently logged-in user, categorized by year, month, and day
 
     :param user: Current user
     :param sort: Attribute to sort results by
     :param order: Order of sorting (asc/desc)
+    :param filter: Field to filter results by
+    :param filter_val: Value to filter field by
     :return:
     """
-    flights = await db.retrieve_flights(user.id, sort, order)
+    flights = await db.retrieve_flights(user.id, sort, order, filter, filter_val)
     flights_ordered: FlightByDateSchema = {}
 
     for flight in flights:
diff --git a/api/schemas/flight.py b/api/schemas/flight.py
index bcfac4e..4a02c63 100644
--- a/api/schemas/flight.py
+++ b/api/schemas/flight.py
@@ -71,7 +71,7 @@ class FlightConciseSchema(BaseModel):
     comments: Optional[str] = None
 
 
-FlightByDateSchema = Dict[int, Union[List['FlightByDateSchema'], FlightConciseSchema]]
+FlightByDateSchema = Dict[int, Union[Dict[int, 'FlightByDateSchema'], FlightConciseSchema]]
 
 
 # HELPERS #